Tinted lenses and methods of manufacture
US7267846B2 · kind B2 · utility
29Cited by
146References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2004 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Mar 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention recognizes that lenses, such as contact lenses, can be pigmented using an ink that includes oligomers, polymers or polymerizable monomers. The ink can be used to make images on or within the lens. Images made using these inks are may be digital or analogue and can be used in a variety of printing methods, including ink-jet printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.